calendar vs schedule

calendar and schedule both are nouns.

Word	Noun	Adjective	Verb	Adverb
calendar	Yes	No	Yes	No
schedule	Yes	No	Yes	No

As verbs, schedule is a hypernym of calendar; that is, schedule is a word with a broader meaning than calendar:

calendar (noun)	schedule (noun)
a list or register of events (appointments or social events or court cases etc)	a temporally organized plan for matters to be attended to
a tabular array of the days (usually for one year)	an ordered list of times at which things are planned to occur
a system of timekeeping that defines the beginning and length and divisions of the year

calendar (verb)	schedule (verb)
enter into a calendar	plan for an activity or event
	make a schedule; plan the time and place for events